The Plant List — A working list for all plant species

⚠ Version 1 of The Plant List has been superseded.

You should refer instead to the current version of The Plant List.

Results

No plant names match your search for Crataegus heterophylla; we will try Crataegus instead.

1480 plant name records match your search criteria Crataegus. The results are below.

• Genus Crataegus is in the family Rosaceae. Species epithets begin with: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

The results can also be downloaded as a CSV file.

See "Status", "Confidence level", "Source" for definitions.

Name	Status	Confi­dence level	Source
Crataegus abbreviata Sarg.	Unresolved		TRO
Crataegus abdita Beadle	Unresolved		TRO
Crataegus aboriginum Sarg.	Synonym		TRO
Crataegus abstrusa Beadle	Unresolved		TRO
Crataegus accincta Sarg.	Unresolved		TRO
Crataegus acclivis Sarg.	Unresolved		TRO
Crataegus acerba Sarg.	Unresolved		TRO
Crataegus acuminata Sarg.	Unresolved		TRO
Crataegus acutifolia Sarg.	Unresolved		TRO
Crataegus acutifolia var. insignis (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus acutiloba Sarg.	Synonym		TRO
Crataegus acutiserrata Kruschke	Unresolved		TRO
Crataegus admiranda Sarg.	Unresolved		TRO
Crataegus adunca Beadle	Unresolved		TRO
Crataegus adusta Beadle	Unresolved		TRO
Crataegus advena Sarg.	Unresolved		TRO
Crataegus aemula Beadle	Unresolved		TRO
Crataegus aestivalis (Walter) Torr. & A. Gray	Accepted		TRO
Crataegus aestivalis var. cerasoides (Sarg.) Sarg.	Accepted		TRO
Crataegus aestivalis f. luculenta (Sarg.) Sarg.	Accepted		TRO
Crataegus aestivalis var. maloides (Sarg.) Sarg.	Accepted		TRO
Crataegus affinis Sarg.	Unresolved		TRO
Crataegus agaia Sarg.	Unresolved		TRO
Crataegus agrestina Beadle	Unresolved		TRO
Crataegus alabamensis Beadle	Unresolved		TRO
Crataegus alachuana Murrill	Unresolved		TRO
Crataegus alachuaniformis Murrill	Unresolved		TRO
Crataegus albanthera Sarg.	Unresolved		TRO
Crataegus albemarlensis Ashe	Unresolved		TRO
Crataegus albicans Ashe	Synonym		TRO
Crataegus albicera Beadle	Unresolved		TRO
Crataegus alemanniensis Cinovskis	Unresolved		TRO
Crataegus algens Beadle	Unresolved		TRO
Crataegus aliena Sarg.	Unresolved		TRO
Crataegus alleghaniensis Beadle	Unresolved		TRO
Crataegus alma Beadle	Unresolved		TRO
Crataegus almaatensis Pojark.	Accepted		TRO
Crataegus alnifolia Siebold & Zucc.	Synonym		TRO
Crataegus alnorum Sarg.	Unresolved		TRO
Crataegus alpinus Mill.	Synonym		TRO
Crataegus alpista Sarg.	Unresolved		TRO
Crataegus altaica (Loudon) Lange	Accepted		TRO
Crataegus altaica var. villosa (Rupr.) Lange	Synonym		TRO
Crataegus alutacea Klokov	Unresolved		TRO
Crataegus amabilis Ashe	Unresolved		TRO
Crataegus amara Ashe	Unresolved		TRO
Crataegus ambigens Sarg.	Unresolved		TRO
Crataegus ambigua C. A. Mey. ex A. Beck.	Unresolved		TRO
Crataegus ambitiosa Sarg.	Unresolved		TRO
Crataegus ambrosia Sarg.	Unresolved		TRO
Crataegus amicalis Sarg.	Unresolved		TRO
Crataegus amicta Ashe	Synonym		TRO
Crataegus amnicola Beadle	Unresolved		TRO
Crataegus amoena Sarg.	Unresolved		TRO
Crataegus ampliata Sarg.	Unresolved		TRO
Crataegus amplifica Sarg.	Unresolved		TRO
Crataegus anamesa Sarg.	Unresolved		TRO
Crataegus ancisa Beadle	Unresolved		TRO
Crataegus androssovii Essenova & Kerimova	Unresolved		TRO
Crataegus angulata Sarg.	Synonym		TRO
Crataegus angustata Sarg.	Unresolved		TRO
Crataegus angustisepala Sarg.	Unresolved		TRO
Crataegus anisophylla Beadle	Unresolved		TRO
Crataegus annosa Beadle	Unresolved		TRO
Crataegus × anomala Sarg.	Unresolved		TRO
Crataegus antheina Sarg.	Unresolved		TRO
Crataegus antimima Sarg.	Unresolved		TRO
Crataegus antiplasta Sarg.	Unresolved		TRO
Crataegus apiifolia Michx.	Unresolved		TRO
Crataegus apiifolia Medik.	Unresolved		TRO
Crataegus × apiomorpha Sarg.	Unresolved		TRO
Crataegus apiomorpha var. cyanophylla (Sarg.) Kruschke	Unresolved		TRO
Crataegus apiomorpha f. paucispina (Sarg.) Kruschke	Unresolved		TRO
Crataegus apposita Sarg.	Unresolved		TRO
Crataegus apposita var. bissellii (Sarg.) Eggl.	Unresolved		TRO
Crataegus aprica Beadle	Unresolved		TRO
Crataegus aquacervensis J.B. Phipps & O'Kennon	Unresolved		TRO
Crataegus aquilonaris Sarg.	Unresolved		TRO
Crataegus araioclada Sarg.	Unresolved		TRO
Crataegus arborea Beadle	Synonym		TRO
Crataegus arborea var. ohioensis (Sarg.) Kruschke	Unresolved		TRO
Crataegus arborescens Elliott	Unresolved		TRO
Crataegus arbutifolia W.T. Aiton	Synonym		TRO
Crataegus arcana Beadle	Unresolved		TRO
Crataegus arcuata Ashe	Unresolved		TRO
Crataegus ardua Sarg.	Unresolved		TRO
Crataegus arduennae Sarg.	Unresolved		TRO
Crataegus arenicola Ashe	Unresolved		TRO
Crataegus arguta Beadle	Unresolved		TRO
Crataegus argyi H. Lév. & Vaniot	Synonym		TRO
Crataegus aria L.	Synonym		TRO
Crataegus aria var. scandica L.	Synonym		TRO
Crataegus aria var. suecica L.	Synonym		TRO
Crataegus aridula Sarg.	Unresolved		TRO
Crataegus arkansana Sarg.	Unresolved		TRO
Crataegus armena Pojark.	Unresolved		TRO
Crataegus armentalis Beadle	Unresolved		TRO
Crataegus armigera Sarg.	Unresolved		TRO
Crataegus arnoldiana Sarg.	Unresolved		TRO
Crataegus arrogans Beadle	Unresolved		TRO
Crataegus arta Beadle	Unresolved		TRO
Crataegus ascendens Sarg.	Unresolved		TRO
Crataegus ashei Beadle	Unresolved		TRO
Crataegus aspera Sarg.	Synonym		TRO
Crataegus asperifolia Sarg.	Synonym		TRO
Crataegus assimilis Beadle	Unresolved		TRO
Crataegus assurgens Sarg.	Synonym		TRO
Crataegus atrofusca Stev. ex Fisch. & Mey.	Unresolved		TRO
Crataegus atropurpurea Ashe	Unresolved		TRO
Crataegus atropurpurea Stewart ex Nyman	Unresolved		TRO
Crataegus × atrorubens 2717+(pro sp.)+	Synonym		TRO
Crataegus atrosanguinea Pojark.	Unresolved		TRO
Crataegus atrovirens J.B. Phipps & O'Kennon	Unresolved		TRO
Crataegus attenuata Ashe	Unresolved		TRO
Crataegus attrita Beadle	Unresolved		TRO
Crataegus audens Beadle	Unresolved		TRO
Crataegus × aulica Sarg.	Unresolved		TRO
Crataegus aurantia Pojark.	Accepted		TRO
Crataegus aurescens J.B. Phipps	Unresolved		TRO
Crataegus austrina Beadle	Unresolved		TRO
Crataegus austromontana Beadle	Unresolved		TRO
Crataegus azarella Griseb.	Accepted		TRO
Crataegus azarolus L.	Unresolved		TRO
Crataegus azarolus subsp. aronia H. Riedl	Synonym		TRO
Crataegus baccata Sarg.	Unresolved		TRO
Crataegus balkwillii Sarg.	Synonym		TRO
Crataegus barbara Sarg.	Unresolved		TRO
Crataegus barbata Sarg.	Unresolved		TRO
Crataegus baroussana Eggl.	Accepted		TRO
Crataegus barrettiana Sarg.	Synonym		TRO
Crataegus barryana Sarg.	Unresolved		TRO
Crataegus basilica Beadle	Synonym		TRO
Crataegus basilica var. viridimontana (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus baxteri Sarg.	Unresolved		TRO
Crataegus beata Sarg.	Unresolved		TRO
Crataegus beata var. opulens (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus beckerana Pojark.	Synonym		TRO
Crataegus beckiana Sarg.	Unresolved		TRO
Crataegus beckwithiae Sarg.	Synonym		TRO
Crataegus bedfordensis Sarg.	Unresolved		TRO
Crataegus beipiaogensis S.L. Tung & X.J. Tian	Synonym		TRO
Crataegus bella Sarg.	Unresolved		TRO
Crataegus bellatula Sarg.	Unresolved		TRO
Crataegus bellica Sarg.	Unresolved		TRO
Crataegus bellula Sarg.	Synonym		TRO
Crataegus benigna Sarg.	Unresolved		TRO
Crataegus berberifolia Torr. & A. Gray	Unresolved		TRO
Crataegus berberifolia var. engelmannii (Sarg.) Eggl.	Unresolved		TRO
Crataegus berlandieri Sarg.	Unresolved		TRO
Crataegus bibas Lour.	Synonym		TRO
Crataegus bicknellii (Eggl.) Eggl.	Synonym		TRO
Crataegus bicolor Ashe	Unresolved		TRO
Crataegus biloba H. Lév.	Synonym		TRO
Crataegus biltmoreana Beadle	Unresolved		TRO
Crataegus biltmoreana var. stonei (Sarg.) Kruschke	Unresolved		TRO
Crataegus bissellii Sarg.	Synonym		TRO
Crataegus blairensis Sarg.	Unresolved		TRO
Crataegus blanchardii Sarg.	Synonym		TRO
Crataegus blanda Sarg.	Unresolved		TRO
Crataegus blandita Sarg.	Unresolved		TRO
Crataegus blothra Laughlin	Synonym		TRO
Crataegus bodinieri H. Lév.	Synonym		TRO
Crataegus boothiana Sarg.	Unresolved		TRO
Crataegus boyntonii Beadle	Synonym		TRO
Crataegus brachyacantha Sarg. & Engelm.	Unresolved		TRO
Crataegus brachyloba Sarg.	Unresolved		TRO
Crataegus brachyphylla Sarg.	Unresolved		TRO
Crataegus brachypoda Sarg.	Synonym		TRO
Crataegus bracteata Sarg.	Synonym		TRO
Crataegus bracteolaris Gand.	Unresolved		TRO
Crataegus brainerdii Sarg.	Unresolved		TRO
Crataegus brainerdii var. asperifolia (Sarg.) Eggl.	Synonym		TRO
Crataegus brainerdii var. cyclophylla (Sarg.) E.J. Palmer	Synonym		TRO
Crataegus brainerdii var. egglestonii (Sarg.) B.L. Rob.	Synonym		TRO
Crataegus brainerdii var. kennedyi (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus brainerdii var. scabrida (Sarg.) Eggl.	Unresolved		TRO
Crataegus brazoria Sarg.	Unresolved		TRO
Crataegus brazoria var. viburnifolia (Sarg.) J.B. Phipps	Unresolved		TRO
Crataegus brevipedicellata Ashe	Unresolved		TRO
Crataegus bristolensis Sarg.	Unresolved		TRO
Crataegus brittonii Eggl.	Unresolved		TRO
Crataegus brockwayae Sarg.	Unresolved		TRO
Crataegus bronxensis Sarg.	Unresolved		TRO
Crataegus brownietta Sarg.	Synonym		TRO
Crataegus brownii Britton	Synonym		TRO
Crataegus brumalis Ashe	Synonym		TRO
Crataegus brunetiana Sarg.	Synonym		TRO
Crataegus brunetiana var. fernaldii (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus buckleyi Beadle	Unresolved		TRO
Crataegus burkeana Sarg.	Unresolved		TRO
Crataegus bushii Sarg.	Unresolved		TRO
Crataegus caerulescens Sarg.	Synonym		TRO
Crataegus caesa Ashe	Synonym		TRO
Crataegus caesariata Sarg.	Synonym		TRO
Crataegus caliciglabra Schuette	Unresolved		TRO
Crataegus calliantha Sarg.	Unresolved		TRO
Crataegus callicarpa Sarg.	Unresolved		TRO
Crataegus callida Beadle	Unresolved		TRO
Crataegus callista Sarg.	Unresolved		TRO
Crataegus calophylla Sarg.	Unresolved		TRO
Crataegus calpodendron (Ehrh.) Medik.	Accepted		TRO
Crataegus calpodendron var. globosa (Sarg.) E.J. Palmer	Accepted		TRO
Crataegus calpodendron var. hispidula (Sarg.) E.J. Palmer	Accepted		TRO
Crataegus calpodendron var. microcarpa (Chapm.) E.J. Palmer	Accepted		TRO
Crataegus calpodendron var. mollicula (Sarg.) E.J. Palmer	Accepted		TRO
Crataegus calpodendron var. obesa (Ashe) E.J. Palmer	Accepted		TRO
Crataegus calva Beadle	Unresolved		TRO
Crataegus calvescens Sarg.	Unresolved		TRO
Crataegus calvinii Sarg.	Unresolved		TRO
Crataegus × calycina Peterm.	Unresolved		TRO
Crataegus calycina subsp. curvisepala Franco	Synonym		TRO
Crataegus campestris Britton	Unresolved		TRO
Crataegus canadensis Sarg.	Unresolved		TRO
Crataegus canbyi Sarg.	Unresolved		TRO
Crataegus candens Sarg.	Unresolved		TRO
Crataegus carnosa Ashe	Unresolved		TRO
Crataegus carrollensis Sarg.	Unresolved		TRO
Crataegus castlegarensis J.B. Phipps & O'Kennon	Unresolved		TRO
Crataegus catawbiensis Ashe	Unresolved		TRO
Crataegus caucasica C. Koch	Unresolved		TRO
Crataegus cavaleriei H. Lév. & Vaniot	Synonym		TRO
Crataegus cavaleriei H. Lév.	Synonym		TRO
Crataegus celsa Sarg.	Synonym		TRO
Crataegus cerasina Sarg.	Unresolved		TRO
Crataegus cerasoides Sarg.	Synonym		TRO
Crataegus ceratocarpa Kossych	Unresolved		TRO
Crataegus cernua Ashe	Unresolved		TRO
Crataegus cerronis A. Nelson	Unresolved		TRO
Crataegus × chadsfordiana Sarg.	Unresolved		TRO
Crataegus champlainensis Sarg.	Unresolved		TRO
Crataegus chantcha H. Lév.	Synonym		TRO
Crataegus chapmanii (Beadle) Ashe	Accepted		TRO
Crataegus chateaugayensis Sarg.	Unresolved		TRO
Crataegus cherokeensis Sarg.	Unresolved		TRO
Crataegus chippewaensis Sarg.	Synonym		TRO
Crataegus chitaensis Sarg.	Synonym		TRO
Crataegus chlorocarpa Lenne & C. Koch	Accepted		TRO
Crataegus chlorosarca Maxim.	Accepted		TRO
Crataegus choriophylla Sarg.	Unresolved		TRO
Crataegus chrysocarpa Ashe	Synonym		TRO
Crataegus chrysocarpa var. aboriginum (Sarg.) Kruschke	Unresolved		TRO
Crataegus chrysocarpa var. bicknellii (Eggl.) E.J. Palmer	Unresolved		TRO
Crataegus chrysocarpa var. blanchardii (Sarg.) J.B. Phipps	Unresolved		TRO
Crataegus chrysocarpa var. caesariata (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus chrysocarpa var. dodgei (Ashe) E.J. Palmer	Unresolved		TRO
Crataegus chrysocarpa var. faxonii (Sarg.) Eggl.	Unresolved		TRO
Crataegus chrysocarpa var. piperi (Britton) Kruschke	Unresolved		TRO
Crataegus chrysocarpa var. praecox (Sarg.) J.B. Phipps	Unresolved		TRO
Crataegus chrysocarpa f. rubescens (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus chrysocarpa var. subrotundifolia (Sarg.) J.B. Phipps	Unresolved		TRO
Crataegus chungtienensis W.W. Sm.	Accepted		TRO
Crataegus cibaria Beadle	Unresolved		TRO
Crataegus cicur Ashe	Unresolved		TRO
Crataegus clara Beadle	Unresolved		TRO
Crataegus claytoniana Sarg.	Unresolved		TRO
Crataegus clintoniana Sarg.	Unresolved		TRO
Crataegus coccinata Sarg.	Unresolved		TRO
Crataegus coccinea L.	Synonym		TRO
Crataegus coccinea var. flabellata (Bosc ex Spach) Britton	Synonym		TRO
Crataegus coccinea var. fulleriana (Sarg.) Kruschke	Unresolved		TRO
Crataegus coccinea var. pringlei (Sarg.) J.A. Macklin & J.B. Phipps	Unresolved		TRO
Crataegus coccinioides Ashe	Unresolved		TRO
Crataegus coccinioides var. dilatata (Sarg.) Eggl.	Unresolved		TRO
Crataegus cocksii Sarg.	Unresolved		TRO
Crataegus coerulea Sarg.	Unresolved		TRO
Crataegus cognata Sarg.	Synonym		TRO
Crataegus colchica Grossh.	Synonym		TRO
Crataegus coleae Sarg.	Unresolved		TRO
Crataegus collicola Ashe	Synonym		TRO
Crataegus collina Chapm.	Unresolved		TRO
Crataegus collina var. collicola (Ashe) E.J. Palmer	Unresolved		TRO
Crataegus collina var. hirtiflora (Sarg.) J.B. Phipps	Unresolved		TRO
Crataegus collina var. lettermanii (Sarg.) Eggl.	Unresolved		TRO
Crataegus collina var. secta (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus collina var. sordida (Sarg.) Eggl.	Synonym		TRO
Crataegus collina var. sordida (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus collina var. succincta (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus colonica Beadle	Unresolved		TRO
Crataegus coloradensis A. Nelson	Unresolved		TRO
Crataegus colorado Ashe	Synonym		TRO
Crataegus colorata Sarg.	Unresolved		TRO
Crataegus columbiana Howell	Unresolved		TRO
Crataegus columbiana Sarg.	Unresolved		TRO
Crataegus columbiana var. brunetiana (Sarg.) Eggl.	Synonym		TRO
Crataegus columbiana var. chrysocarpa (Ashe) Dorn	Unresolved		TRO
Crataegus columbiana var. occidentalis (Britton) Dorn	Unresolved		TRO
Crataegus columbiana var. piperi (Britton) Eggl.	Synonym		TRO
Crataegus comans Sarg.	Unresolved		TRO
Crataegus communis Beadle	Unresolved		TRO
Crataegus compacta Sarg.	Unresolved		TRO
Crataegus comparata Sarg.	Unresolved		TRO
Crataegus compitalis Beadle	Unresolved		TRO
Crataegus compta Sarg.	Unresolved		TRO
Crataegus concinna Beadle	Unresolved		TRO
Crataegus condigna Beadle	Unresolved		TRO
Crataegus conferta Sarg.	Unresolved		TRO
Crataegus confinis Sarg.	Unresolved		TRO
Crataegus confragosa Sarg.	Unresolved		TRO
Crataegus confusa Sarg.	Unresolved		TRO
Crataegus congestiflora Sarg.	Unresolved		TRO
Crataegus conjuncta Sarg.	Synonym		TRO
Crataegus conjungens Sarg.	Unresolved		TRO
Crataegus consanguinea Beadle	Unresolved		TRO
Crataegus conspecta Sarg.	Unresolved		TRO
Crataegus conspicua Sarg.	Unresolved		TRO
Crataegus constans Beadle	Unresolved		TRO
Crataegus consueta Sarg.	Unresolved		TRO
Crataegus contigua Sarg.	Unresolved		TRO
Crataegus contortifolia Sarg.	Unresolved		TRO
Crataegus contortula Sarg.	Unresolved		TRO
Crataegus contrita Beadle	Unresolved		TRO
Crataegus cordata (Mill.) Aiton	Accepted		TRO
Crataegus coreana H. Lév.	Synonym		TRO
Crataegus cornellii Sarg.	Unresolved		TRO
Crataegus corporea Sarg.	Unresolved		TRO
Crataegus × corusca Sarg.	Unresolved		TRO
Crataegus corusca f. blothra (Laughlin) Kruschke	Unresolved		TRO
Crataegus corusca var. hillii (Sarg.) Kruschke	Unresolved		TRO
Crataegus crassa Ashe	Unresolved		TRO
Crataegus crassifolia Sarg.	Unresolved		TRO
Crataegus crawfordiana Sarg.	Unresolved		TRO
Crataegus craytonii Beadle	Unresolved		TRO
Crataegus crenulata (D. Don) Roxb.	Synonym		TRO
Crataegus cristata Ashe	Unresolved		TRO
Crataegus crocata Ashe	Unresolved		TRO
Crataegus crocea Beadle	Unresolved		TRO
Crataegus crocina Beadle	Unresolved		TRO
Crataegus croomiana Sarg.	Unresolved		TRO
Crataegus cruda Sarg.	Unresolved		TRO
Crataegus crudelis Sarg.	Unresolved		TRO
Crataegus cruenta Ashe	Unresolved		TRO
Crataegus crus-galli L.	Accepted		TRO
Crataegus crus-galli var. barrettiana (Sarg.) E.J. Palmer	Accepted		TRO
Crataegus crus-galli var. danielsii (E.J. Palmer) Rickett	Accepted		TRO
Crataegus crus-galli var. exigua (Sarg.) Eggl.	Accepted		TRO
Crataegus crus-galli var. leptophylla (Sarg.) E.J. Palmer	Accepted		TRO
Crataegus crus-galli f. oblongata (Sarg.) E.J. Palmer	Accepted		TRO
Crataegus crus-galli var. oblongata Sarg.	Synonym		TRO
Crataegus crus-galli var. regalis (Beadle) J.B. Phipps	Accepted		TRO
Crataegus crus-galli f. rubens (Sarg.) E.J. Palmer	Accepted		TRO
Crataegus crus-galli var. rubens Sarg.	Synonym		TRO
Crataegus crus-galli f. truncata (Sarg.) E.J. Palmer	Accepted		TRO
Crataegus crux Ashe	Unresolved		TRO
Crataegus cullasagensis Ashe	Unresolved		TRO
Crataegus culta Sarg.	Unresolved		TRO
Crataegus cuneata Siebold & Zucc.	Accepted		TRO
Crataegus cuneata var. cuneata	Accepted		TRO
Crataegus cuneata f. pleniflora S.X. Qian	Synonym		TRO
Crataegus cuneata var. shangnanensis L. Mao & T.C. Cui	Synonym		TRO
Crataegus cuneata var. tangchungchangii (F.P. Metcalf) T.C. Ku & Spongberg	Accepted		TRO
Crataegus cuneata f. tangchungchangii (F.P. Metcalf) Y.T. Chang	Synonym		TRO
Crataegus cuneiformis (Marshall) Eggl.	Accepted		TRO
Crataegus cuprea Sarg.	Unresolved		TRO
Crataegus cupressocollina J.B. Phipps & O'Kennon	Unresolved		TRO
Crataegus cuprina J.B. Phipps	Accepted		TRO
Crataegus cupulifera Sarg.	Unresolved		TRO
Crataegus × curonica Cinovskis.	Unresolved		TRO
Crataegus curva Beadle	Unresolved		TRO
Crataegus curvisepala Lindm.	Accepted		TRO
Crataegus curvisepala subsp. lindmanii Byatt	Synonym		TRO
Crataegus cuspidata Spach	Synonym		TRO
Crataegus cuthbertii Ashe	Unresolved		TRO
Crataegus cyanophylla Sarg.	Synonym		TRO
Crataegus cyclophylla Sarg.	Synonym		TRO
Crataegus cydonia Gruber	Unresolved		TRO
Crataegus dacrioidea Sarg.	Unresolved		TRO
Crataegus dahurica Koehne ex C.K. Schneid.	Accepted		TRO
Crataegus dahurica var. dahurica	Accepted		TRO
Crataegus dahurica var. laevicalyx (J.X. Huang, L.Y. Sun & T.J. Feng) T.C. Ku & Spongberg	Accepted		TRO
Crataegus dallasiana Sarg.	Unresolved		TRO
Crataegus danielsii E.J. Palmer	Synonym		TRO
Crataegus dapsilis Beadle	Unresolved		TRO
Crataegus darvasica Pojark.	Synonym		TRO
Crataegus dasyphylla Sarg.	Unresolved		TRO
Crataegus davisii Sarg.	Unresolved		TRO
Crataegus dawsoniana Sarg.	Unresolved		TRO
Crataegus dayana Sarg.	Unresolved		TRO
Crataegus debilis Sarg.	Unresolved		TRO
Crataegus decens Ashe	Unresolved		TRO
Crataegus declivitatis Sarg.	Unresolved		TRO
Crataegus decora Ashe	Unresolved		TRO
Crataegus delawarensis Sarg.	Synonym		TRO
Crataegus delecta Sarg.	Unresolved		TRO
Crataegus delectabilis Sarg.	Unresolved		TRO
Crataegus delectata Sarg.	Unresolved		TRO
Crataegus delosii Sarg.	Unresolved		TRO
Crataegus deltoides Ashe	Unresolved		TRO
Crataegus delucida Sarg.	Unresolved		TRO
Crataegus demissa Sarg.	Synonym		TRO
Crataegus denaria Beadle	Unresolved		TRO
Crataegus × densiflora Sarg.	Unresolved		TRO
Crataegus densiflora Desf. ex K. Koch	Unresolved		TRO
Crataegus denudata Sarg.	Unresolved		TRO
Crataegus depilis Sarg.	Unresolved		TRO
Crataegus depressa C. Presl	Unresolved		TRO
Crataegus depressa Ashe	Unresolved		TRO
Crataegus desertorum Sarg.	Unresolved		TRO
Crataegus × desueta Sarg.	Unresolved		TRO
Crataegus detectabilis Sarg.	Unresolved		TRO
Crataegus deweyana Sarg.	Unresolved		TRO
Crataegus dewingii Sarg.	Unresolved		TRO
Crataegus diaphora Sarg.	Unresolved		TRO
Crataegus diffusa Sarg.	Synonym		TRO
Crataegus dilatata Sarg.	Synonym		TRO
Crataegus dipyrena Pojark.	Unresolved		TRO
Crataegus discolor Sarg.	Synonym		TRO
Crataegus disjuncta Sarg.	Unresolved		TRO
Crataegus dispar Beadle	Unresolved		TRO
Crataegus × disperma Ashe	Unresolved		TRO
Crataegus disperma var. peoriensis (Sarg.) Kruschke	Unresolved		TRO
Crataegus dispessa Ashe	Unresolved		TRO
Crataegus dissimilis Sarg.	Unresolved		TRO
Crataegus dissociabilis Sarg.	Unresolved		TRO
Crataegus dissona Sarg.	Synonym		TRO
Crataegus dissona var. bellula (Sarg.) Kruschke	Unresolved		TRO
Crataegus distincta Kruschke	Unresolved		TRO
Crataegus divergens (Peck) Sarg.	Accepted		TRO
Crataegus diversa Sarg.	Unresolved		TRO
Crataegus divida Sarg.	Synonym		TRO
Crataegus divisifolia Sarg.	Unresolved		TRO
Crataegus dodgei Ashe	Synonym		TRO
Crataegus dodgei var. lumaria (Ashe) Sarg.	Unresolved		TRO
Crataegus dodgei var. rotundata (Sarg.) Kruschke	Unresolved		TRO
Crataegus dolosa Beadle	Unresolved		TRO
Crataegus douglasii Lindl.	Unresolved		TRO
Crataegus douglasii var. suksdorfii Sarg.	Synonym		TRO
Crataegus drymopila Sarg.	Unresolved		TRO
Crataegus dshungarica Zab.	Synonym		TRO
Crataegus dumetosa Sarg.	Synonym		TRO
Crataegus dumicola Sarg.	Unresolved		TRO
Crataegus dunbarii Sarg.	Synonym		TRO
Crataegus × dunensis Cinovskis.	Unresolved		TRO
Crataegus dunmorensis Sarg.	Unresolved		TRO
Crataegus duracina Sarg.	Unresolved		TRO
Crataegus durifolia Ashe	Unresolved		TRO
Crataegus durobrivensis Sarg.	Unresolved		TRO
Crataegus × durobrivensis	Unresolved		TRO
Crataegus dzhairensis Vassilcz.	Unresolved		TRO
Crataegus eamesii Sarg.	Unresolved		TRO
Crataegus eatoniana Sarg.	Unresolved		TRO
Crataegus eburnea Ashe	Unresolved		TRO
Crataegus edsonii Sarg.	Unresolved		TRO
Crataegus edura Beadle	Unresolved		TRO
Crataegus edurescens Sarg.	Unresolved		TRO
Crataegus efferta Sarg.	Unresolved		TRO
Crataegus effulgens Sarg.	Unresolved		TRO
Crataegus eganii Ashe	Synonym		TRO
Crataegus egens Beadle	Unresolved		TRO
Crataegus eggertii Britton	Unresolved		TRO
Crataegus egglestonii Sarg.	Synonym		TRO
Crataegus egregia Beadle	Unresolved		TRO
Crataegus ellipticifolia Sarg.	Unresolved		TRO
Crataegus ellwangeriana Sarg.	Synonym		TRO
Crataegus elongata Sarg.	Unresolved		TRO
Crataegus emersoniana Sarg.	Unresolved		TRO
Crataegus enderbyensis J.B. Phipps & O'Kennon	Unresolved		TRO
Crataegus engelmannii Sarg.	Synonym		TRO
Crataegus engelmannii var. sinistra (Beadle) E.J. Palmer	Unresolved		TRO
Crataegus ensifera Sarg.	Unresolved		TRO
Crataegus enucleata Sarg.	Unresolved		TRO
Crataegus erecta Sarg.	Unresolved		TRO
Crataegus eriantha Pojark.	Unresolved		TRO
Crataegus errata Sarg.	Unresolved		TRO
Crataegus erubescens Sarg.	Unresolved		TRO
Crataegus erythropoda Ashe	Unresolved		TRO
Crataegus escalloniifolia Schltdl.	Synonym		TRO
Crataegus × estonica Cinovskis.	Unresolved		TRO
Crataegus evansiana Sarg.	Unresolved		TRO
Crataegus exclusa Sarg.	Synonym		TRO
Crataegus exigua Sarg.	Synonym		TRO
Crataegus exilis Beadle	Unresolved		TRO
Crataegus eximia Beadle	Unresolved		TRO
Crataegus exornata Sarg.	Unresolved		TRO
Crataegus extraria Beadle	Unresolved		TRO
Crataegus fallacina Klokov	Unresolved		TRO
Crataegus fallax Ashe	Unresolved		TRO
Crataegus fallens Gruber	Unresolved		TRO
Crataegus fastosa Sarg.	Unresolved		TRO
Crataegus faxonii Sarg.	Synonym		TRO
Crataegus faxonii var. praetermissa (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus fecunda Sarg.	Unresolved		TRO
Crataegus felix Sarg.	Unresolved		TRO
Crataegus fennica Kalm	Unresolved		TRO
Crataegus fera Beadle	Unresolved		TRO
Crataegus ferentaria Sarg.	Unresolved		TRO
Crataegus ferganensis Pojark.	Unresolved		TRO
Crataegus fernaldii Sarg.	Synonym		TRO
Crataegus ferox Sarg.	Unresolved		TRO
Crataegus ferrissii Ashe	Synonym		TRO
Crataegus ferruginea Pers.	Synonym		TRO
Crataegus ferta Sarg.	Unresolved		TRO
Crataegus fertilis Sarg.	Unresolved		TRO
Crataegus festiva Sarg.	Unresolved		TRO
Crataegus filipes Ashe	Unresolved		TRO
Crataegus finitima Sarg.	Unresolved		TRO
Crataegus fischeri C.K. Schneid.	Synonym		TRO
Crataegus flabellata (Bosc ex Spach) Rydb.	Accepted		TRO
Crataegus flabellata var. grayana (Eggl.) E.J. Palmer	Accepted		TRO
Crataegus flagrans Sarg.	Unresolved		TRO
Crataegus flammata Sarg.	Unresolved		TRO
Crataegus flammea Sarg.	Unresolved		TRO
Crataegus flava Aiton	Synonym		TRO
Crataegus flava var. integra Nash	Synonym		TRO
Crataegus flavida Sarg.	Unresolved		TRO
Crataegus flavocarnis Ashe	Unresolved		TRO
Crataegus florea Sarg.	Unresolved		TRO
Crataegus florens Beadle	Unresolved		TRO
Crataegus floridana Sarg.	Unresolved		TRO
Crataegus floridula Sarg.	Unresolved		TRO
Crataegus florifera Sarg.	Unresolved		TRO
Crataegus florifera var. celsa (Sarg.) Kruschke	Unresolved		TRO
Crataegus florifera var. mortonis (Laughlin) Kruschke	Unresolved		TRO
Crataegus florifera var. shirleyensis (Sarg.) Kruschke	Unresolved		TRO
Crataegus florifera var. virilis (Sarg.) Kruschke	Unresolved		TRO
Crataegus fluviatalis Sarg.	Synonym		TRO
Crataegus foetida Ashe	Unresolved		TRO
Crataegus foliata Sarg.	Unresolved		TRO
Crataegus fontanesiana Steud.	Unresolved		TRO
Crataegus forbesiae Sarg.	Unresolved		TRO
Crataegus × formosa Sarg.	Unresolved		TRO
Crataegus fortis Beadle	Unresolved		TRO
Crataegus fortunata Sarg.	Synonym		TRO
Crataegus franklinensis Sarg.	Unresolved		TRO
Crataegus × fretalis Sarg.	Unresolved		TRO
Crataegus fructuosa Sarg.	Unresolved		TRO
Crataegus frugalis Beadle	Unresolved		TRO
Crataegus frugiferens Beadle	Unresolved		TRO
Crataegus frutescens Sarg.	Unresolved		TRO
Crataegus fruticosa Sarg.	Unresolved		TRO
Crataegus fucosa Sarg.	Unresolved		TRO
Crataegus fulgens Sarg.	Unresolved		TRO
Crataegus fulgida Sarg.	Unresolved		TRO
Crataegus fulleriana Sarg.	Synonym		TRO
Crataegus fulleriana var. chippewaensis (Sarg.) Kruschke	Unresolved		TRO
Crataegus fulleriana f. magniflora (Sarg.) Kruschke	Synonym		TRO
Crataegus fulleriana var. magniflora (Sarg.) J.S. Pringle	Unresolved		TRO
Crataegus fulleriana var. miranda (Sarg.) Kruschke	Unresolved		TRO
Crataegus furcata Sarg.	Unresolved		TRO
Crataegus furtiva Beadle	Unresolved		TRO
Crataegus fusca Sarg.	Unresolved		TRO
Crataegus galbana Beadle	Unresolved		TRO
Crataegus gattingeri Ashe	Unresolved		TRO
Crataegus gaudens Sarg.	Unresolved		TRO
Crataegus gaultii Sarg.	Unresolved		TRO
Crataegus gaylussacia A. Heller	Unresolved		TRO
Crataegus gemmosa Sarg.	Synonym		TRO
Crataegus geneseensis Sarg.	Unresolved		TRO
Crataegus genialis Sarg.	Unresolved		TRO
Crataegus geniculata Ashe	Unresolved		TRO
Crataegus georgiana Sarg.	Synonym		TRO
Crataegus gilva Beadle	Unresolved		TRO
Crataegus glabra Thunb.	Synonym		TRO
Crataegus glabrata Sarg.	Unresolved		TRO
Crataegus glabrifolia Sarg.	Synonym		TRO
Crataegus glabriuscula Sarg.	Synonym		TRO
Crataegus glandulosa Michx.	Unresolved		TRO
Crataegus glandulosa Aiton	Unresolved		TRO
Crataegus × glareosa Ashe	Unresolved		TRO
Crataegus glauca Wall. ex G. Don	Synonym		TRO
Crataegus glaucophylla Sarg.	Unresolved		TRO
Crataegus globirimosa Murrill	Unresolved		TRO
Crataegus globosa Sarg.	Synonym		TRO
Crataegus gloriosa Sarg.	Synonym		TRO
Crataegus gracilior J.B. Phipps	Accepted		TRO
Crataegus gracilipes Sarg.	Unresolved		TRO
Crataegus × gracilis Cinoskis.	Unresolved		TRO
Crataegus gracilis Sarg.	Unresolved		TRO
Crataegus grandifolia J.B. Phipps	Accepted		TRO
Crataegus grandis Ashe	Unresolved		TRO
Crataegus gratiosa Sarg.	Unresolved		TRO
Crataegus gravesii Sarg.	Unresolved		TRO
Crataegus gravida Beadle	Unresolved		TRO
Crataegus gravis Ashe	Unresolved		TRO
Crataegus grayana Eggl.	Synonym		TRO
Crataegus greggiana Eggl.	Accepted		TRO
Crataegus grossa Sarg.	Unresolved		TRO
Crataegus gruberi Ashe	Unresolved		TRO
Crataegus habereri Sarg.	Unresolved		TRO
Crataegus habilis Ashe	Unresolved		TRO
Crataegus hadleyana Sarg.	Synonym		TRO
Crataegus haemacarpa Ashe	Unresolved		TRO
Crataegus × haemocarpa Ashe	Unresolved		TRO
Crataegus halliana Sarg.	Unresolved		TRO
Crataegus hamata Sarg.	Unresolved		TRO
Crataegus handyae Sarg.	Unresolved		TRO
Crataegus hannibalensis E.J. Palmer	Unresolved		TRO
Crataegus harbisonii Beadle	Unresolved		TRO
Crataegus hargeri Sarg.	Unresolved		TRO
Crataegus harryi Sarg.	Synonym		TRO
Crataegus harveyana Sarg.	Unresolved		TRO
Crataegus heidelbergensis Sarg.	Synonym		TRO
Crataegus helderbergensis Sarg.	Unresolved		TRO
Crataegus helenae Grynj & Klok.	Synonym		TRO
Crataegus helenolae Grynj & Klok.	Accepted		TRO
Crataegus helvina Ashe	Unresolved		TRO
Crataegus henryi Dunn	Synonym		TRO
Crataegus heterodonta Pojark.	Unresolved		TRO
Crataegus hiemalis Lange	Unresolved		TRO
Crataegus hillii Sarg.	Synonym		TRO
Crataegus hirtella Sarg.	Unresolved		TRO
Crataegus hirtiflora Sarg.	Synonym		TRO
Crataegus hispidula Sarg.	Synonym		TRO
Crataegus hissarica Pojark.	Unresolved		TRO
Crataegus holmesiana Ashe	Unresolved		TRO
Crataegus holmesiana var. amicta (Ashe) E.J. Palmer	Unresolved		TRO
Crataegus holmesiana var. chippewaensis (Sarg.) E.J. Palmer	Synonym		TRO
Crataegus holmesiana var. magniflora (Sarg.) E.J. Palmer	Synonym		TRO
Crataegus holmesiana var. tardipes (Sarg.) Sarg.	Unresolved		TRO
Crataegus honeoyensis Sarg.	Unresolved		TRO
Crataegus honesta Sarg.	Synonym		TRO
Crataegus horridula Sarg.	Unresolved		TRO
Crataegus horseyi E.J. Palmer	Unresolved		TRO
Crataegus howeana Sarg.	Unresolved		TRO
Crataegus hudsonica Sarg.	Unresolved		TRO
Crataegus hupehensis Sarg.	Accepted		TRO
Crataegus hupehensis var. flavida S.Y. Wang	Synonym		TRO
Crataegus hypolasia K. Koch	Synonym		TRO
Crataegus hystricina Ashe	Unresolved		TRO
Crataegus × ideae Sarg.	Unresolved		TRO
Crataegus ignava Beadle	Unresolved		TRO
Crataegus ignava Sarg.	Unresolved		TRO
Crataegus × illecebrosa Sarg.	Unresolved		TRO
Crataegus illinoiensis Ashe	Unresolved		TRO
Crataegus illudens Beadle	Unresolved		TRO
Crataegus illuminata Sarg.	Unresolved		TRO
Crataegus illustris Beadle	Unresolved		TRO
Crataegus × immanis Ashe	Unresolved		TRO
Crataegus immitis Ashe	Unresolved		TRO
Crataegus impar Beadle	Unresolved		TRO
Crataegus impervia Sarg.	Unresolved		TRO
Crataegus implicata Sarg.	Unresolved		TRO
Crataegus improvisa Sarg.	Synonym		TRO
Crataegus inanis Beadle	Unresolved		TRO
Crataegus inaudita Sarg.	Unresolved		TRO
Crataegus × incaedua Sarg.	Unresolved		TRO
Crataegus incana Beadle	Unresolved		TRO
Crataegus incilis Beadle	Unresolved		TRO
Crataegus incisa Sarg.	Unresolved		TRO
Crataegus incompta Sarg.	Unresolved		TRO
Crataegus indica L.	Synonym		TRO
Crataegus indicens Ashe	Unresolved		TRO
Crataegus indigens Ashe	Unresolved		TRO
Crataegus inducta Ashe	Unresolved		TRO
Crataegus inermis Sessé & Moc.	Synonym		TRO
Crataegus infensa Sarg.	Unresolved		TRO
Crataegus infesta Sarg.	Unresolved		TRO
Crataegus ingens Beadle	Unresolved		TRO
Crataegus inopina Beadle	Unresolved		TRO
Crataegus inopinata Sarg.	Unresolved		TRO
Crataegus inops Beadle	Unresolved		TRO
Crataegus insidiosa Beadle	Unresolved		TRO
Crataegus insignata Sarg.	Unresolved		TRO
Crataegus insignis Sarg.	Synonym		TRO
Crataegus insolens Sarg.	Synonym		TRO
Crataegus insolita Sarg.	Unresolved		TRO
Crataegus insperata Sarg.	Unresolved		TRO
Crataegus insularis Cinovskis	Synonym		TRO
Crataegus integra (Nash) Beadle	Accepted		TRO
Crataegus integrifolia (Roxb.) G. Klotz	Synonym		TRO
Crataegus integrifolius Roxb.	Synonym		TRO
Crataegus integriloba Sarg.	Synonym		TRO
Crataegus interior Beadle	Unresolved		TRO
Crataegus intermixta Beck	Unresolved		TRO
Crataegus × intermixta 8757+(pro sp.)+	Unresolved		TRO
Crataegus intermixta Sarg.	Unresolved		TRO
Crataegus intricata Lange	Unresolved		TRO
Crataegus intricata var. boyntonii (Beadle) Kruschke	Unresolved		TRO
Crataegus intricata f. fortunata (Sarg.) Kruschke	Unresolved		TRO
Crataegus intricata var. neobushii (Sarg.) Kruschke	Unresolved		TRO
Crataegus intricata var. rubella (Beadle) Kruschke	Unresolved		TRO
Crataegus intricata var. straminea (Beadle) E.J. Palmer	Synonym		TRO
Crataegus intricata f. straminea (Beadle) Kruschke	Unresolved		TRO
Crataegus inusitula Sarg.	Unresolved		TRO
Crataegus invicta Beadle	Unresolved		TRO
Crataegus invisa Sarg.	Unresolved		TRO
Crataegus iracunda Beadle	Unresolved		TRO
Crataegus iracunda var. brumalis (Ashe) Kruschke	Unresolved		TRO
Crataegus iracunda var. diffusa (Sarg.) Kruschke	Unresolved		TRO
Crataegus iracunda var. populnea (Ashe) Jafar	Unresolved		TRO
Crataegus iracunda var. stolonifera (Sarg.) Kruschke	Unresolved		TRO
Crataegus irrasa Sarg.	Unresolved		TRO
Crataegus irrasa var. blanchardii (Sarg.) Eggl.	Synonym		TRO
Crataegus irrasa var. divergens Peck	Synonym		TRO
Crataegus isfajramensis Pachom.	Unresolved		TRO
Crataegus iterata Sarg.	Unresolved		TRO
Crataegus jackii Sarg.	Unresolved		TRO
Crataegus jasperensis Sarg.	Unresolved		TRO
Crataegus jenningsii Sarg.	Unresolved		TRO
Crataegus jesupii Sarg.	Unresolved		TRO
Crataegus johnstonii J.B. Phipps	Accepted		TRO
Crataegus jonesiae Sarg.	Unresolved		TRO
Crataegus jonesiae var. brownietta (Sarg.) Kruschke	Unresolved		TRO
Crataegus jonesiae var. harryi (Sarg.) Kruschke	Unresolved		TRO
Crataegus jozana C.K. Schneid.	Unresolved		TRO
Crataegus kansuensis E.H. Wilson	Accepted		TRO
Crataegus karadaghensis Pojark.	Unresolved		TRO
Crataegus keepii Sarg.	Unresolved		TRO
Crataegus × kellermanii Sarg.	Unresolved		TRO
Crataegus × kelloggii Sarg.	Unresolved		TRO
Crataegus kennedyi Sarg.	Synonym		TRO
Crataegus × kingstonensis Sarg.	Unresolved		TRO
Crataegus kinzerae Sarg.	Unresolved		TRO
Crataegus klokovii Ivaschin	Unresolved		TRO
Crataegus × knieskerniana Sarg.	Unresolved		TRO
Crataegus knorringiana Pojark.	Unresolved		TRO
Crataegus komarovii Sarg.	Synonym		TRO
Crataegus korolkowii L. Henry	Accepted		TRO
Crataegus kulingensis Sarg.	Synonym		TRO
Crataegus × kupfferi Cinovskis.	Unresolved		TRO
Crataegus kyrtostyla auct.	Synonym		TRO
Crataegus lacera Sarg.	Unresolved		TRO
Crataegus laciniata Ucria	Unresolved		TRO
Crataegus laciniata subsp. pojarkovae Franco	Synonym		TRO
Crataegus lacrimata Small	Unresolved		TRO
Crataegus laetans Sarg.	Unresolved		TRO
Crataegus × laetifica Sarg.	Unresolved		TRO
Crataegus laetula Sarg.	Unresolved		TRO
Crataegus laevicalyx J.X. Huang, L.Y. Sun & T.J. Feng	Synonym		TRO
Crataegus laevigata (Poir.) DC.	Accepted		TRO
Crataegus lanata Beadle	Unresolved		TRO
Crataegus lancei J.B. Phipps	Unresolved		TRO
Crataegus lanceolata Sarg.	Synonym		TRO
Crataegus × laneyi Sarg.	Unresolved		TRO
Crataegus lanigera Sarg.	Unresolved		TRO
Crataegus lanuginosa Sarg.	Unresolved		TRO
Crataegus lasiantha Sarg.	Unresolved		TRO
Crataegus lassa Beadle	Unresolved		TRO
Crataegus × latebrosa 8757+(pro sp.)+	Unresolved		TRO
Crataegus latebrosa Sarg.	Unresolved		TRO
Crataegus latifrons Sarg.	Unresolved		TRO
Crataegus latisepala Ashe	Synonym		TRO
Crataegus × laurentiana Sarg.	Unresolved		TRO
Crataegus laurentiana var. brunetiana (Sarg.) Kruschke	Unresolved		TRO
Crataegus lauta Sarg.	Unresolved		TRO
Crataegus × lawrencensis 8757+(pro sp.)+	Unresolved		TRO
Crataegus lawrencensis Sarg.	Unresolved		TRO
Crataegus laxa Beadle	Unresolved		TRO
Crataegus laxiflora Sarg.	Synonym		TRO
Crataegus leimonia Sarg.	Unresolved		TRO
Crataegus leioclada Sarg.	Unresolved		TRO
Crataegus leiomonogyna Klokov	Accepted		TRO
Crataegus leiophylla Sarg.	Synonym		TRO
Crataegus leiophylla var. maineana (Sarg.) Eggl.	Unresolved		TRO
Crataegus lemingtonensis Sarg.	Unresolved		TRO
Crataegus lenis Beadle	Unresolved		TRO
Crataegus lennoniana Sarg.	Unresolved		TRO
Crataegus lenta Ashe	Unresolved		TRO
Crataegus lentula Ashe	Unresolved		TRO
Crataegus leonensis E.J. Palmer	Unresolved		TRO
Crataegus lepida Beadle	Unresolved		TRO
Crataegus leptalea Sarg.	Unresolved		TRO
Crataegus leptophylla Sarg.	Synonym		TRO
Crataegus leptopoda Sarg.	Unresolved		TRO
Crataegus letchworthiana Sarg.	Unresolved		TRO
Crataegus lettermanii Sarg.	Synonym		TRO
Crataegus leucantha Laughlin	Unresolved		TRO
Crataegus levis Sarg.	Unresolved		TRO
Crataegus limata Beadle	Unresolved		TRO
Crataegus limatula Sarg.	Synonym		TRO
Crataegus limnophila Sarg.	Unresolved		TRO
Crataegus limnophiloides Murrill	Unresolved		TRO
Crataegus limosa Sarg.	Unresolved		TRO
Crataegus lindmanii Hrab.-Uhr.	Accepted		TRO
Crataegus lipskyi Klokov	Unresolved		TRO
Crataegus × littoralis Sarg.	Unresolved		TRO
Crataegus livingstoniana Sarg.	Unresolved		TRO
Crataegus livoniana Sarg.	Unresolved		TRO
Crataegus lobulata Sarg.	Synonym		TRO
Crataegus × locuples Sarg.	Unresolved		TRO
Crataegus longipedunculata Sarg.	Unresolved		TRO
Crataegus longispina Sarg.	Unresolved		TRO
Crataegus × lucorum Sarg.	Unresolved		TRO
Crataegus lucorum var. insolens (Sarg.) Eggl.	Unresolved		TRO
Crataegus luculenta Sarg.	Synonym		TRO
Crataegus ludoviciensis Sarg.	Unresolved		TRO
Crataegus lumaria Ashe	Synonym		TRO
Crataegus luminosa Sarg.	Unresolved		TRO
Crataegus lutensis Sarg.	Synonym		TRO
Crataegus luteola Sarg.	Unresolved		TRO
Crataegus luxuriosa Sarg.	Unresolved		TRO
Crataegus lyi H. Lév.	Synonym		TRO
Crataegus macauleyae Sarg.	Unresolved		TRO
Crataegus macera Sarg.	Unresolved		TRO
Crataegus macilenta Beadle	Unresolved		TRO
Crataegus mackensenii Sarg.	Unresolved		TRO
Crataegus mackenzii Sarg.	Unresolved		TRO
Crataegus mackenzii var. aspera (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus mackenzii var. bracteata (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus macounii Sarg.	Unresolved		TRO
Crataegus macra Beadle	Unresolved		TRO
Crataegus macracantha Lodd. ex Loudon	Synonym		TRO
Crataegus macracantha var. colorado (Ashe) Kruschke	Unresolved		TRO
Crataegus macracantha var. divida (Sarg.) Kruschke	Unresolved		TRO
Crataegus macracantha var. integriloba (Sarg.) Kruschke	Unresolved		TRO
Crataegus macracantha var. neofluvialis (Ashe) Eggl.	Synonym		TRO
Crataegus macracantha var. occidentalis (Britton) Eggl.	Synonym		TRO
Crataegus macracantha var. pertomentosa (Ashe) Kruschke	Unresolved		TRO
Crataegus macracantha var. rhombifolia (Sarg.) Eggl.	Unresolved		TRO
Crataegus macracantha var. succulenta (Schrad. ex Link) Eggl.	Synonym		TRO
Crataegus macrocalyx Sarg.	Unresolved		TRO
Crataegus macrocarpa Hagetsch.	Unresolved		TRO
Crataegus macrophylla Sarg.	Unresolved		TRO
Crataegus macropoda Sarg.	Unresolved		TRO
Crataegus macrosperma Ashe	Unresolved		TRO
Crataegus macrosperma var. acutiloba (Sarg.) Eggl.	Unresolved		TRO
Crataegus macrosperma var. demissa (Sarg.) Eggl.	Unresolved		TRO
Crataegus macrosperma var. eganii (Ashe) Kruschke	Unresolved		TRO
Crataegus macrosperma var. matura (Sarg.) Eggl.	Unresolved		TRO
Crataegus macrosperma var. pastorum (Sarg.) Eggl.	Unresolved		TRO
Crataegus macrosperma var. pentandra (Sarg.) Eggl.	Unresolved		TRO
Crataegus macrosperma var. roanensis (Ashe) E.J. Palmer	Unresolved		TRO
Crataegus magniflora Sarg.	Synonym		TRO
Crataegus magnifolia Sarg.	Synonym		TRO
Crataegus maineana Sarg.	Synonym		TRO
Crataegus maloides Sarg.	Synonym		TRO
Crataegus × mansfieldensis Sarg.	Unresolved		TRO
Crataegus marcida Ashe	Unresolved		TRO
Crataegus margaretta Ashe	Unresolved		TRO
Crataegus margaretta var. brownii (Britton) Sarg.	Unresolved		TRO
Crataegus margaretta var. meiophylla (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus mariettensis Sarg.	Unresolved		TRO
Crataegus × maritima Cinovskis	Synonym		TRO
Crataegus marshallii Eggl.	Unresolved		TRO
Crataegus matura Sarg.	Synonym		TRO
Crataegus maximowiczii C.K. Schneid.	Accepted		TRO
Crataegus maximowiczii var. ninganensis S.Q. Nie & B.J. Jen	Synonym		TRO
Crataegus mcgeeae Ashe	Unresolved		TRO
Crataegus medioxima Sarg.	Unresolved		TRO
Crataegus megapulchra Murrill	Unresolved		TRO
Crataegus meiophylla Sarg.	Synonym		TRO
Crataegus melanocarpa M. Bieb.	Synonym		TRO
Crataegus membranacea Sarg.	Synonym		TRO
Crataegus menandiana Sarg.	Unresolved		TRO
Crataegus mendosa Beadle	Unresolved		TRO
Crataegus mercerensis Sarg.	Unresolved		TRO
Crataegus meridiana Beadle	Unresolved		TRO
Crataegus meridionalis Sarg.	Unresolved		TRO
Crataegus × merita Sarg.	Unresolved		TRO
Crataegus meticulosa Sarg.	Unresolved		TRO
Crataegus mexicana Moc. & Sessé ex DC.	Accepted		TRO
Crataegus mexicana var. microsperma Eggl.	Synonym		TRO
Crataegus meyeri Pojark.	Unresolved		TRO
Crataegus michauxii Pers.	Unresolved		TRO
Crataegus michiganensis Ashe	Synonym		TRO
Crataegus microcarpa Lindl.	Unresolved		TRO
Crataegus microphylla C. Koch	Unresolved		TRO
Crataegus microsperma Sarg.	Unresolved		TRO
Crataegus milleri Sarg.	Unresolved		TRO
Crataegus miniata Ashe	Unresolved		TRO
Crataegus minor Sessé & Moc.	Synonym		TRO
Crataegus minutiflora Sarg.	Unresolved		TRO
Crataegus mira Beadle	Unresolved		TRO
Crataegus miranda Sarg.	Synonym		TRO
Crataegus missouriensis Ashe	Unresolved		TRO
Crataegus mitis Sarg.	Unresolved		TRO
Crataegus modesta Sarg.	Unresolved		TRO
Crataegus mohrii Beadle	Synonym		TRO
Crataegus mollicula Sarg.	Synonym		TRO
Crataegus mollis Scheele	Synonym		TRO
Crataegus mollis f. dumetosa (Sarg.) E.J. Palmer	Synonym		TRO
Crataegus mollis var. dumetosa (Sarg.) Kruschke	Unresolved		TRO
Crataegus mollis var. sera (Sarg.) Eggl.	Unresolved		TRO
Crataegus mollita Sarg.	Unresolved		TRO
Crataegus monantha Sarg.	Unresolved		TRO
Crataegus monogyna Jacq.	Accepted		TRO
Crataegus monogyna subsp. azarella Franco	Synonym		TRO
Crataegus monogyna subsp. curvisepala Soó	Synonym		TRO
Crataegus monogyna subsp. leiomonogyna Franco	Synonym		TRO
Crataegus monogyna var. ronnigeri K.Malý	Unresolved		WCSP (in review)
Crataegus monosperma Sarg.	Unresolved		TRO
Crataegus monstrata Sarg.	Unresolved		TRO
Crataegus monticola Cinovskis	Unresolved		TRO
Crataegus montivaga Sarg.	Unresolved		TRO
Crataegus mortonis Laughlin	Synonym		TRO
Crataegus moselemensis Gruber	Unresolved		TRO
Crataegus multifida Ashe	Unresolved		TRO
Crataegus multispina Ashe	Unresolved		TRO
Crataegus munda Beadle	Unresolved		TRO
Crataegus munita Sarg.	Unresolved		TRO
Crataegus myrtifolia C. Presl	Unresolved		TRO
Crataegus nananixonii J.B. Phipps & O'Kennon	Unresolved		TRO
Crataegus napaea Sarg.	Unresolved		TRO
Crataegus necopinata Pojark.	Accepted		TRO
Crataegus nelsonii Eggl.	Unresolved		TRO
Crataegus nemoralis Sarg.	Unresolved		TRO
Crataegus neobaxteri Sarg.	Unresolved		TRO
Crataegus neobushii Sarg.	Synonym		TRO
Crataegus neofluvialis Ashe	Synonym		TRO
Crataegus neolondinensis Sarg.	Unresolved		TRO
Crataegus nescia Sarg.	Unresolved		TRO
Crataegus newelliana Murrill	Unresolved		TRO
Crataegus nikitinii Essenova	Unresolved		TRO
Crataegus nitens Sarg.	Synonym		TRO
Crataegus nitida (Engelm. ex Britton & A. Br.) Sarg.	Accepted		TRO
Crataegus × nitidula Sarg.	Unresolved		TRO
Crataegus nitidula var. limatula (Sarg.) Kruschke	Unresolved		TRO
Crataegus nitidula var. recedens (Sarg.) Kruschke	Unresolved		TRO
Crataegus notabilis Sarg.	Unresolved		TRO
Crataegus notha Sarg.	Unresolved		TRO
Crataegus nubicola Beadle	Unresolved		TRO
Crataegus nuda Sarg.	Unresolved		TRO
Crataegus numerosa Sarg.	Unresolved		TRO
Crataegus nupera Ashe	Unresolved		TRO
Crataegus oakesiana Eggl.	Unresolved		TRO
Crataegus obesa Ashe	Synonym		TRO
Crataegus oblita Sarg.	Unresolved		TRO
Crataegus oblongifolia Sarg.	Unresolved		TRO
Crataegus obscura Sarg.	Unresolved		TRO
Crataegus obtusifolia Pers.	Synonym		TRO
Crataegus occidentalis Britton	Synonym		TRO
Crataegus ohioensis Sarg.	Synonym		TRO
Crataegus okanaganensis J.B. Phipps & O'Kennon	Unresolved		TRO
Crataegus okennonii J.B. Phipps	Unresolved		TRO
Crataegus olida Ashe	Unresolved		TRO
Crataegus olivacea Sarg.	Unresolved		TRO
Crataegus onusta Ashe	Unresolved		TRO
Crataegus opaca Hook. & Arn.	Unresolved		TRO
Crataegus operta Ashe	Unresolved		TRO
Crataegus opica Ashe	Unresolved		TRO
Crataegus opima Beadle	Unresolved		TRO
Crataegus opulens Sarg.	Synonym		TRO
Crataegus orbicularis J.B. Phipps & O'Kennon	Unresolved		TRO
Crataegus oresbia W.W. Sm.	Accepted		TRO
Crataegus orientalis Pall. ex Bieb.	Unresolved		TRO
Crataegus orientobaltica Cinovskis	Unresolved		TRO
Crataegus ornata Sarg.	Unresolved		TRO
Crataegus osiliensis Cinovskis	Accepted		TRO
Crataegus otiosa Ashe	Unresolved		TRO
Crataegus ouachitensis E.J. Palmer	Unresolved		TRO
Crataegus ovata Sarg.	Synonym		TRO
Crataegus ovatifolia Sarg.	Unresolved		TRO
Crataegus oxyacantha L.	Synonym		TRO
Crataegus oxyacantha subsp. palmstruchii Hrabetova-Uhrova	Synonym		TRO
Crataegus oxyacantha var. pinnatifida Regel	Synonym		TRO
Crataegus pachyphylla Sarg.	Unresolved		TRO
Crataegus pactilis Ashe	Unresolved		TRO
Crataegus paddockiae Sarg.	Unresolved		TRO
Crataegus padifolia Sarg.	Unresolved		TRO
Crataegus pagensis Sarg.	Unresolved		TRO
Crataegus pallasii Griseb.	Accepted		TRO
Crataegus pallens Beadle	Unresolved		TRO
Crataegus palliata Sarg.	Unresolved		TRO
Crataegus pallidula Sarg.	Unresolved		TRO
Crataegus palmeri Sarg.	Synonym		TRO
Crataegus palmstruchii Lindm.	Accepted		TRO
Crataegus paludosa Sarg.	Unresolved		TRO
Crataegus palustris Ashe	Unresolved		TRO
Crataegus pamiroalaica V. Zapr.	Unresolved		TRO
Crataegus panda Beadle	Unresolved		TRO
Crataegus panda Ashe	Unresolved		TRO
Crataegus paradoxa Sarg.	Synonym		TRO
Crataegus parca Ashe	Unresolved		TRO
Crataegus parciflora Sarg.	Unresolved		TRO
Crataegus parkiae Sarg.	Unresolved		TRO
Crataegus parryana Eggl.	Synonym		TRO
Crataegus parviflora Sarg.	Unresolved		TRO
Crataegus parvifolia Aiton	Unresolved		TRO
Crataegus parvula Sarg.	Synonym		TRO
Crataegus pascens Ashe	Unresolved		TRO
Crataegus pastorum Sarg.	Synonym		TRO
Crataegus patrum Sarg.	Unresolved		TRO
Crataegus pauciflora (Poir.) Pers.	Synonym		TRO
Crataegus paucispina Sarg.	Synonym		TRO
Crataegus pausiaca Ashe	Synonym		TRO
Crataegus pearsonii Ashe	Unresolved		TRO
Crataegus pechiana Sarg.	Unresolved		TRO
Crataegus peckietta Sarg.	Unresolved		TRO
Crataegus peckii Sarg.	Unresolved		TRO
Crataegus pedicellata Sarg.	Unresolved		TRO
Crataegus pedicellata var. albicans (Ashe) E.J. Palmer	Unresolved		TRO
Crataegus pedicellata var. assurgens (Sarg.) E.J. Palmer	Synonym		TRO
Crataegus pedicellata f. assurgens (Sarg.) Kruschke	Unresolved		TRO
Crataegus pedicellata var. caesa (Ashe) Kruschke	Unresolved		TRO
Crataegus pedicellata var. ellwangeriana (Sarg.) Eggl.	Unresolved		TRO
Crataegus pedicellata var. gloriosa (Sarg.) Sarg.	Unresolved		TRO
Crataegus pedicellata var. robesoniana (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus pedicellata var. sertata (Sarg.) Kruschke	Unresolved		TRO
Crataegus pellecta Sarg.	Unresolved		TRO
Crataegus pellucidula Sarg.	Unresolved		TRO
Crataegus penita Beadle	Unresolved		TRO
Crataegus pennsylvanica Ashe	Unresolved		TRO
Crataegus pennypackeri Sarg.	Unresolved		TRO
Crataegus pentagyna Waldst. & Kit.	Accepted		TRO
Crataegus pentandra Sarg.	Synonym		TRO
Crataegus pentaneura Ashe	Unresolved		TRO
Crataegus pentasperma Ashe	Unresolved		TRO
Crataegus peoriensis Sarg.	Synonym		TRO
Crataegus pequotorum Sarg.	Unresolved		TRO
Crataegus peramoena Sarg.	Unresolved		TRO
Crataegus peregrina Sarg.	Unresolved		TRO
Crataegus perjucunda Sarg.	Unresolved		TRO
Crataegus perlevis Ashe	Unresolved		TRO
Crataegus permera Sarg.	Unresolved		TRO
Crataegus × permixta 7800+(pro sp.)+	Unresolved		TRO
Crataegus permixta E.J. Palmer	Unresolved		TRO
Crataegus × persimilis Sarg.	Unresolved		TRO
Crataegus persistens Sarg.	Unresolved		TRO
Crataegus pertomentosa Ashe	Synonym		TRO
Crataegus pexa Beadle	Unresolved		TRO
Crataegus phaenopyrum (L. f.) Medik.	Accepted		TRO
Crataegus phaneroneura Sarg.	Unresolved		TRO
Crataegus philadelphica Sarg.	Synonym		TRO
Crataegus phippsii O'Kennon	Unresolved		TRO
Crataegus phlebodia Sarg.	Unresolved		TRO
Crataegus picta Sarg.	Unresolved		TRO
Crataegus pilifera Sarg.	Unresolved		TRO
Crataegus × pilosa Sarg.	Unresolved		TRO
Crataegus pinetorum Beadle	Unresolved		TRO
Crataegus pinguis Sarg.	Unresolved		TRO
Crataegus pinnatifida Bunge	Accepted		TRO
Crataegus pinnatifida f. geholensis (C.K. Schneid.) Kitag.	Synonym		TRO
Crataegus pinnatifida var. geholensis C.K. Schneid.	Synonym		TRO
Crataegus pinnatifida var. korolkowii (Asch. & Graebn.) Yabe	Synonym		TRO
Crataegus pinnatifida var. major N.E. Br.	Accepted		TRO
Crataegus pinnatifida var. pinnatifida	Accepted		TRO
Crataegus pinnatifida var. psilosa C.K. Schneid.	Accepted		TRO
Crataegus pinnatifida f. psilosa (C.K. Schneid.) Kitag.	Synonym		TRO
Crataegus pinnatifida var. songarica Dippel	Synonym		TRO
Crataegus piperi Britton	Synonym		TRO
Crataegus pisifera Sarg.	Synonym		TRO
Crataegus placens Sarg.	Unresolved		TRO
Crataegus placiva Sarg.	Unresolved		TRO
Crataegus plagiosepala Pojark.	Unresolved		TRO
Crataegus plana Sarg.	Unresolved		TRO
Crataegus platycarpa Sarg.	Unresolved		TRO
Crataegus pojarkovae Kossych	Accepted		TRO
Crataegus poliophylla Sarg.	Unresolved		TRO
Crataegus polita Sarg.	Unresolved		TRO
Crataegus polita var. tatnalliana (Sarg.) Sarg.	Unresolved		TRO
Crataegus poloniensis Cinovskis	Unresolved		TRO
Crataegus polybracteata Ashe	Unresolved		TRO
Crataegus polyclada Sarg.	Unresolved		TRO
Crataegus pontica C. Koch	Accepted		TRO
Crataegus popovii Chrshan.	Unresolved		TRO
Crataegus populifolia Walter	Unresolved		TRO
Crataegus populnea Ashe	Synonym		TRO
Crataegus porracea Ashe	Unresolved		TRO
Crataegus porrecta Ashe	Unresolved		TRO
Crataegus porteri Britton	Synonym		TRO
Crataegus porteri var. caerulescens (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus praearmata Klokov	Unresolved		TRO
Crataegus praeclara Sarg.	Unresolved		TRO
Crataegus praecoqua Sarg.	Unresolved		TRO
Crataegus praecox Sarg.	Synonym		TRO
Crataegus praeformosa Murrill	Unresolved		TRO
Crataegus praestans Sarg.	Unresolved		TRO
Crataegus praetermissa Sarg.	Synonym		TRO
Crataegus pratensis Sarg.	Unresolved		TRO
Crataegus premora Ashe	Unresolved		TRO
Crataegus pringlei Sarg.	Synonym		TRO
Crataegus pringlei var. exclusa (Sarg.) Eggl.	Unresolved		TRO
Crataegus pringlei var. lobulata (Sarg.) Eggl.	Unresolved		TRO
Crataegus prinoides Sarg.	Unresolved		TRO
Crataegus prismatica Ashe	Unresolved		TRO
Crataegus procera Sarg.	Unresolved		TRO
Crataegus promiens Sarg.	Unresolved		TRO
Crataegus promissa Sarg.	Unresolved		TRO
Crataegus prona Ashe	Unresolved		TRO
Crataegus propensa Sarg.	Unresolved		TRO
Crataegus propinqua Ashe	Unresolved		TRO
Crataegus propixa Sarg.	Unresolved		TRO
Crataegus propria Sarg.	Unresolved		TRO
Crataegus pruinosa (H.L. Wendl.) K. Koch	Accepted		TRO
Crataegus pruinosa f. angulata (Sarg.) E.J. Palmer	Accepted		TRO
Crataegus pruinosa var. brachypoda (Sarg.) E.J. Palmer	Accepted		TRO
Crataegus pruinosa var. cognata (Sarg.) J.B. Phipps	Accepted		TRO
Crataegus pruinosa var. conjuncta (Sarg.) Eggl.	Accepted		TRO
Crataegus pruinosa var. delawarensis (Sarg.) E.J. Palmer	Accepted		TRO
Crataegus pruinosa f. dissona (Sarg.) Eggl.	Synonym		TRO
Crataegus pruinosa var. dissona (Sarg.) Eggl.	Synonym		TRO
Crataegus pruinosa var. dissona (Sarg.) J.B. Phipps	Accepted		TRO
Crataegus pruinosa var. georgiana (Sarg.) J.B. Phipps	Accepted		TRO
Crataegus pruinosa var. latisepala (Ashe) Eggl.	Accepted		TRO
Crataegus pruinosa var. leiophylla (Sarg.) J.B. Phipps	Accepted		TRO
Crataegus pruinosa var. magnifolia (Sarg.) J.B. Phipps	Accepted		TRO
Crataegus pruinosa var. parvula (Sarg.) J.B. Phipps	Accepted		TRO
Crataegus pruinosa var. philadelphica (Sarg.) Eggl.	Accepted		TRO
Crataegus pruinosa var. porteri (Britton) Eggl.	Accepted		TRO
Crataegus pruinosa var. rugosa (Ashe) Kruschke	Accepted		TRO
Crataegus pruinosa var. virella (Ashe) Kruschke	Accepted		TRO
Crataegus prunifolia (Poir.) Pers.	Accepted		TRO
Crataegus pseudoambigua Pojark.	Unresolved		TRO
Crataegus pseudoazarolus Popov	Unresolved		TRO
Crataegus pseudoheterophylla Pojark.	Unresolved		TRO
Crataegus pseudokyrtostyla Klokov	Synonym		TRO
Crataegus pseudomelanocarpa M. Pop. ex Pojark.	Unresolved		TRO
Crataegus × pseudooxyacantha Cinovskis.	Unresolved		TRO
Crataegus pseudosanguinea M. Pop. ex Pojark.	Unresolved		TRO
Crataegus × puberis Sarg.	Unresolved		TRO
Crataegus pubescens Steud.	Unresolved		TRO
Crataegus pubescens (C. Presl) C. Presl	Accepted		TRO
Crataegus pubifolia Ashe	Unresolved		TRO
Crataegus pudens Sarg.	Unresolved		TRO
Crataegus pulcherrima Ashe	Unresolved		TRO
Crataegus pulchra Sarg.	Unresolved		TRO
Crataegus pulla Beadle	Unresolved		TRO
Crataegus punctata Jacq.	Synonym		TRO
Crataegus punctata f. aurea (Aiton) Rehder	Unresolved		TRO
Crataegus punctata var. aurea Aiton	Synonym		TRO
Crataegus punctata f. canescens (Britton) Kruschke	Unresolved		TRO
Crataegus punctata var. canescens Britton	Synonym		TRO
Crataegus punctata var. pausiaca (Ashe) E.J. Palmer	Unresolved		TRO
Crataegus purpurea J.A. Bosc ex DC.	Synonym		TRO
Crataegus purpurea var. altaica Loudon	Synonym		TRO
Crataegus purpurella J.B. Phipps & O'Kennon	Unresolved		TRO
Crataegus puta Sarg.	Unresolved		TRO
Crataegus putata Sarg.	Unresolved		TRO
Crataegus putnamiana Sarg.	Unresolved		TRO
Crataegus pyracantha (L.) Medik.	Synonym		TRO
Crataegus pyracantha var. crenulata (D. Don) Loudon	Synonym		TRO
Crataegus pyracantha var. pauciflora (Poir.) Steud.	Synonym		TRO
Crataegus pyracanthoides Beadle	Unresolved		TRO
Crataegus pyracanthoides var. arborea (Beadle) E.J. Palmer	Unresolved		TRO
Crataegus pyramidata Sarg.	Unresolved		TRO
Crataegus pyrifolia Lam.	Synonym		TRO
Crataegus pyriformis Jacques	Unresolved		TRO
Crataegus pyriformis Britton	Unresolved		TRO
Crataegus pyripulchra Murrill	Unresolved		TRO
Crataegus quaesita Beadle	Unresolved		TRO
Crataegus quercina Ashe	Unresolved		TRO
Crataegus quinebaugensis Sarg.	Unresolved		TRO
Crataegus quitensis Benth.	Unresolved		TRO
Crataegus radians Sarg.	Unresolved		TRO
Crataegus radiata Sarg.	Unresolved		TRO
Crataegus raleighensis Ashe	Unresolved		TRO
Crataegus ramosa Sarg.	Unresolved		TRO
Crataegus × randiana Sarg.	Unresolved		TRO
Crataegus rara Sarg.	Unresolved		TRO
Crataegus rava Beadle	Unresolved		TRO
Crataegus ravenelii Sarg.	Unresolved		TRO
Crataegus ravida Ashe	Unresolved		TRO
Crataegus recedens Sarg.	Synonym		TRO
Crataegus recordabilis Sarg.	Unresolved		TRO
Crataegus recurva Beadle	Unresolved		TRO
Crataegus redolens Ashe	Unresolved		TRO
Crataegus regalis Beadle	Synonym		TRO
Crataegus regalis var. paradoxa (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus relicta Sarg.	Unresolved		TRO
Crataegus remota Sarg.	Unresolved		TRO
Crataegus remotilobata Raikova ex Popov	Accepted		TRO
Crataegus repentina Sarg.	Unresolved		TRO
Crataegus repulsans Sarg.	Unresolved		TRO
Crataegus resecta Ashe	Unresolved		TRO
Crataegus reses Ashe	Unresolved		TRO
Crataegus resima Beadle	Unresolved		TRO
Crataegus retrusa Ashe	Unresolved		TRO
Crataegus reverchonii Sarg.	Unresolved		TRO
Crataegus reverchonii var. discolor (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus reverchonii var. mohrii (Beadle) J.B. Phipps	Unresolved		TRO
Crataegus reverchonii var. palmeri (Sarg.) J.B. Phipps	Unresolved		TRO
Crataegus reverchonii var. stevensiana (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus rhipidophylla Gand.	Unresolved		TRO
Crataegus rhipidophylla var. ronnigeri (K.Malý) Janjic	Unresolved		WCSP (in review)
Crataegus rhodella Ashe	Unresolved		TRO
Crataegus rhombifolia Sarg.	Synonym		TRO
Crataegus ridgwayi Sarg.	Unresolved		TRO
Crataegus rigens Beadle	Unresolved		TRO
Crataegus rigida Sarg.	Unresolved		TRO
Crataegus rimosa Beadle	Unresolved		TRO
Crataegus rimosiformis Murrill	Unresolved		TRO
Crataegus riparia Ashe	Unresolved		TRO
Crataegus rivularis Nutt.	Unresolved		TRO
Crataegus rivuloadamensis J.B. Phipps & O'Kennon	Unresolved		TRO
Crataegus rivulopugnensis J.B. Phipps & O'Kennon	Unresolved		TRO
Crataegus roanensis Ashe	Synonym		TRO
Crataegus roanensis var. fluviatilis (Sarg.) Kruschke	Unresolved		TRO
Crataegus roanensis var. heidelbergensis (Sarg.) Kruschke	Unresolved		TRO
Crataegus robbinsoniana Sarg.	Unresolved		TRO
Crataegus robesoniana Sarg.	Synonym		TRO
Crataegus robinsonii Sarg.	Unresolved		TRO
Crataegus robusta Sarg.	Unresolved		TRO
Crataegus roribacca Ashe	Unresolved		TRO
Crataegus rosei Eggl.	Accepted		TRO
Crataegus rosei subsp. parryana (Eggl.) J.B. Phipps	Accepted		TRO
Crataegus rotunda Sarg.	Unresolved		TRO
Crataegus rotundata Sarg.	Synonym		TRO
Crataegus rotundifolia Moench	Synonym		TRO
Crataegus rotundifolia var. aboriginum (Sarg.) Sarg.	Synonym		TRO
Crataegus rotundifolia var. bicknellii Eggl.	Synonym		TRO
Crataegus rotundifolia var. chrysocarpa (Ashe) Eggl.	Synonym		TRO
Crataegus rotundifolia var. faxonii (Sarg.) Eggl.	Synonym		TRO
Crataegus rotundifolia f. rubescens Sarg.	Synonym		TRO
Crataegus rubella Beadle	Synonym		TRO
Crataegus rubens Cinovskis	Unresolved		TRO
Crataegus rubicunda Sarg.	Unresolved		TRO
Crataegus rubicundula Sarg.	Unresolved		TRO
Crataegus rubra Lour.	Synonym		TRO
Crataegus rubribracteolata J.B. Phipps & O'Kennon	Unresolved		TRO
Crataegus rubrifolia Sarg.	Unresolved		TRO
Crataegus rubrisepala Sarg.	Unresolved		TRO
Crataegus × rubrocarnea Sarg.	Unresolved		TRO
Crataegus rubrolutea Sarg.	Unresolved		TRO
Crataegus rudis Sarg.	Unresolved		TRO
Crataegus rufipes Ashe	Unresolved		TRO
Crataegus rufula Sarg.	Unresolved		TRO
Crataegus rugosa Ashe	Synonym		TRO
Crataegus rupestris Ashe	Unresolved		TRO
Crataegus × rupicola 8757+(pro sp.)+	Unresolved		TRO
Crataegus rupicola Sarg.	Unresolved		TRO
Crataegus ruricola Sarg.	Unresolved		TRO
Crataegus russanovii Cinovskis	Unresolved		TRO
Crataegus rustica Beadle	Unresolved		TRO
Crataegus rutila Sarg.	Synonym		TRO
Crataegus sabineana Ashe	Unresolved		TRO
Crataegus saeva Sarg.	Unresolved		TRO
Crataegus saligna Greene	Unresolved		TRO
Crataegus sanguinea Pall.	Accepted		TRO
Crataegus sanguinea var. glabra Maxim.	Synonym		TRO
Crataegus sanguinea var. incisa Regel	Synonym		TRO
Crataegus sanguinea var. inermis Kar. & Kir.	Synonym		TRO
Crataegus sanguinea var. villosa Rupr.	Synonym		TRO
Crataegus sargentii Beadle	Unresolved		TRO
Crataegus sarniensis Sarg.	Unresolved		TRO
Crataegus saundersiana Sarg.	Synonym		TRO
Crataegus sauratonae Ashe	Unresolved		TRO
Crataegus scabra Sarg.	Unresolved		TRO
Crataegus scabrida Sarg.	Synonym		TRO
Crataegus scabrida var. asperifolia (Sarg.) Kruschke	Unresolved		TRO
Crataegus scabrida var. balkwillii (Sarg.) J.B. Phipps	Unresolved		TRO
Crataegus scabrida var. cyclophylla (Sarg.) Kruschke	Unresolved		TRO
Crataegus scabrida var. dunbarii (Sarg.) Kruschke	Unresolved		TRO
Crataegus scabrida var. egglestonii (Sarg.) Kruschke	Unresolved		TRO
Crataegus scabrida var. hadleyana (Sarg.) J.B. Phipps	Unresolved		TRO
Crataegus scabrida var. honesta (Sarg.) Kruschke	Unresolved		TRO
Crataegus scabrida var. improvisa (Sarg.) J.B. Phipps	Unresolved		TRO
Crataegus scabrifolia (Franch.) Rehder	Accepted		TRO
Crataegus schizophylla Eggl.	Unresolved		TRO
Crataegus schneckii Ashe	Unresolved		TRO
Crataegus schraderana Ledeb.	Synonym		TRO
Crataegus schuettei Ashe	Unresolved		TRO
Crataegus schuettei var. basilica (Beadle) J.B. Phipps	Unresolved		TRO
Crataegus schuettei var. ferrissii (Ashe) Kruschke	Unresolved		TRO
Crataegus scopulorum Sarg.	Unresolved		TRO
Crataegus scorna Sarg.	Unresolved		TRO
Crataegus searsii Sarg.	Unresolved		TRO
Crataegus seclusa Sarg.	Unresolved		TRO
Crataegus secta Sarg.	Synonym		TRO
Crataegus sectilis Ashe	Unresolved		TRO
Crataegus seducta Sarg.	Unresolved		TRO
Crataegus segnis Beadle	Unresolved		TRO
Crataegus sejuncta Sarg.	Unresolved		TRO
Crataegus senta Beadle	Unresolved		TRO
Crataegus sequax Ashe	Unresolved		TRO
Crataegus sera Sarg.	Synonym		TRO
Crataegus serena Sarg.	Unresolved		TRO
Crataegus serratifolia Desf.	Synonym		TRO
Crataegus serratissima J.B. Phipps	Unresolved		TRO
Crataegus sertata Sarg.	Synonym		TRO
Crataegus setosa Sarg.	Unresolved		TRO
Crataegus severa Sarg.	Unresolved		TRO
Crataegus sextilis Sarg.	Unresolved		TRO
Crataegus shaferi Ashe	Unresolved		TRO
Crataegus shandongensis F.Z. Li & W.D. Peng	Accepted		TRO
Crataegus sheila-phippsiae J.B. Phipps & O'Kennon	Unresolved		TRO
Crataegus shensiensis Pojark.	Accepted		TRO
Crataegus sheridana A. Nelson	Unresolved		TRO
Crataegus shinnersii Kruschke	Unresolved		TRO
Crataegus shirleyensis Sarg.	Synonym		TRO
Crataegus shuswapensis J.B. Phipps & O'Kennon	Unresolved		TRO
Crataegus sicca Sarg.	Unresolved		TRO
Crataegus sicca var. glabrifolia (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus siderea Sarg.	Unresolved		TRO
Crataegus signata Beadle	Unresolved		TRO
Crataegus silvestris Sarg.	Unresolved		TRO
Crataegus silvicola Beadle	Unresolved		TRO
Crataegus silvicola Gand.	Unresolved		TRO
Crataegus silvicola var. beckwithiae (Sarg.) Eggl.	Unresolved		TRO
Crataegus simulans Sarg.	Unresolved		TRO
Crataegus × simulata 8757+(pro sp.)+	Unresolved		TRO
Crataegus simulata Sarg.	Unresolved		TRO
Crataegus sinistra Beadle	Synonym		TRO
Crataegus sitiens Ashe	Unresolved		TRO
Crataegus slavinii Sarg.	Unresolved		TRO
Crataegus smithii Sarg.	Synonym		TRO
Crataegus sodalis Beadle	Unresolved		TRO
Crataegus songarica K. Koch	Accepted		TRO
Crataegus sordida Sarg.	Synonym		TRO
Crataegus sororia Beadle	Unresolved		TRO
Crataegus spathulata Michx.	Unresolved		TRO
Crataegus spatifolia Sarg.	Unresolved		TRO
Crataegus × spatiosa Sarg.	Unresolved		TRO
Crataegus speciosa Sarg.	Unresolved		TRO
Crataegus spes-aestatum J.B. Phipps	Unresolved		TRO
Crataegus sphaenophylla Pojark.	Unresolved		TRO
Crataegus spicata Lam.	Synonym		TRO
Crataegus spinulosa Sarg.	Unresolved		TRO
Crataegus spissa Sarg.	Unresolved		TRO
Crataegus spissiflora Sarg.	Unresolved		TRO
Crataegus splendida Sarg.	Unresolved		TRO
Crataegus stankovii Kossych	Unresolved		TRO
Crataegus stellata Sarg.	Unresolved		TRO
Crataegus stenophylla Sarg.	Unresolved		TRO
Crataegus stenosepala Sarg.	Unresolved		TRO
Crataegus stephanostyla H. Lév. & Vaniot	Synonym		TRO
Crataegus steubenensis Sarg.	Unresolved		TRO
Crataegus stevenii Pojark.	Unresolved		TRO
Crataegus stevensiana Sarg.	Synonym		TRO
Crataegus stipulosa (Kunth) Steud.	Synonym		TRO
Crataegus stolonifera Sarg.	Synonym		TRO
Crataegus stonei Sarg.	Synonym		TRO
Crataegus straminea Beadle	Synonym		TRO
Crataegus stratfordensis Sarg.	Unresolved		TRO
Crataegus streeterae Sarg.	Unresolved		TRO
Crataegus strigosa Sarg.	Unresolved		TRO
Crataegus strongylophylla Sarg.	Unresolved		TRO
Crataegus structilis Ashe	Unresolved		TRO
Crataegus suavis Sarg.	Unresolved		TRO
Crataegus subaudens Murrill	Unresolved		TRO
Crataegus subborealis Cinovskis	Unresolved		TRO
Crataegus subflavida Murrill	Unresolved		TRO
Crataegus sublobulata Sarg.	Unresolved		TRO
Crataegus submollis Sarg.	Unresolved		TRO
Crataegus suborbiculata Sarg.	Unresolved		TRO
Crataegus suborbiculata var. saundersiana (Sarg.) Kruschke	Unresolved		TRO
Crataegus subpaludosa Murrill	Unresolved		TRO
Crataegus subpilosa Sarg.	Unresolved		TRO
Crataegus subrotunda Klokov	Unresolved		TRO
Crataegus subrotundifolia Sarg.	Synonym		TRO
Crataegus subserrata Benth.	Synonym		TRO
Crataegus subviridis Beadle	Unresolved		TRO
Crataegus succincta Sarg.	Synonym		TRO
Crataegus succulenta Schrad. ex Link	Synonym		TRO
Crataegus succulenta var. gemmosa (Sarg.) Kruschke	Unresolved		TRO
Crataegus succulenta var. laxiflora (Sarg.) Kruschke	Unresolved		TRO
Crataegus succulenta var. macracantha (Lodd. ex Loudon) Eggl.	Unresolved		TRO
Crataegus succulenta var. membranacea (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus succulenta var. michiganensis (Ashe) E.J. Palmer	Unresolved		TRO
Crataegus succulenta var. neofluvialis (Ashe) E.J. Palmer	Unresolved		TRO
Crataegus succulenta var. occidentalis (Britton) E.J. Palmer	Synonym		TRO
Crataegus succulenta var. pertomentosa (Ashe) E.J. Palmer	Synonym		TRO
Crataegus succulenta var. pisifera (Sarg.) Kruschke	Unresolved		TRO
Crataegus succulenta var. rutila (Sarg.) Kruschke	Unresolved		TRO
Crataegus sucida Sarg.	Unresolved		TRO
Crataegus suksdorfii (Sarg.) Kruschke	Accepted		TRO
Crataegus sulfurea J.B. Phipps	Accepted		TRO
Crataegus superata Sarg.	Unresolved		TRO
Crataegus sutherlandensis Sarg.	Unresolved		TRO
Crataegus swanensis Sarg.	Unresolved		TRO
Crataegus sylvestris	Unresolved		TRO
Crataegus szovitsii Pojark.	Unresolved		TRO
Crataegus tanacetifolia (Lam.) Pers.	Accepted		TRO
Crataegus tanaitica Klokov	Unresolved		TRO
Crataegus tangchungchangii F.P. Metcalf	Synonym		TRO
Crataegus tantula Sarg.	Unresolved		TRO
Crataegus tanuphylla Sarg.	Unresolved		TRO
Crataegus taquetii H. Lév.	Synonym		TRO
Crataegus tarda Sarg.	Unresolved		TRO
Crataegus tardiflora Sarg.	Unresolved		TRO
Crataegus tardipes Sarg.	Synonym		TRO
Crataegus tatnalliana Sarg.	Synonym		TRO
Crataegus taurica Pojark.	Unresolved		TRO
Crataegus tenax Ashe	Unresolved		TRO
Crataegus tenella Ashe	Unresolved		TRO
Crataegus tenera Ashe	Unresolved		TRO
Crataegus tennowana A. Nelson	Unresolved		TRO
Crataegus tenuifolia Kom.	Unresolved		TRO
Crataegus tenuifolia Britton	Unresolved		TRO
Crataegus tenuiloba Sarg.	Unresolved		TRO
Crataegus tenuisepala Sarg.	Unresolved		TRO
Crataegus tenuispina Sarg.	Unresolved		TRO
Crataegus tenuissima Sarg.	Unresolved		TRO
Crataegus teres Beadle	Unresolved		TRO
Crataegus tetrica Beadle	Unresolved		TRO
Crataegus texana Buckley	Unresolved		TRO
Crataegus thayeri Sarg.	Unresolved		TRO
Crataegus thermopegaea E.J. Palmer	Unresolved		TRO
Crataegus tianschanica Pojark.	Unresolved		TRO
Crataegus tinctoria Ashe	Unresolved		TRO
Crataegus tisdalei Murrill	Unresolved		TRO
Crataegus tomentosa L.	Unresolved		TRO
Crataegus tomentosa var. chapmanii Beadle	Synonym		TRO
Crataegus tomentosa var. microcarpa Chapm.	Synonym		TRO
Crataegus tomentosa var. smithii (Sarg.) Eggl.	Unresolved		TRO
Crataegus torminalis L.	Synonym		TRO
Crataegus torta Sarg.	Unresolved		TRO
Crataegus tortilis Ashe	Unresolved		TRO
Crataegus tortuosa Sarg.	Unresolved		TRO
Crataegus torva Beadle	Unresolved		TRO
Crataegus tournefortii Griseb.	Accepted		TRO
Crataegus trachyphylla Sarg.	Unresolved		TRO
Crataegus tracyi Ashe ex Eggl.	Accepted		TRO
Crataegus trahax Ashe	Unresolved		TRO
Crataegus transcaspica Pojark.	Unresolved		TRO
Crataegus transmississippiensis Sarg.	Unresolved		TRO
Crataegus treleasei Sarg.	Unresolved		TRO
Crataegus trianthophora Sarg.	Unresolved		TRO
Crataegus tribulosa Sarg.	Unresolved		TRO
Crataegus triflora Chapm.	Unresolved		TRO
Crataegus trilobata Labill. ex Poir.	Synonym		TRO
Crataegus triosteum Gruber	Unresolved		TRO
Crataegus tripartita Sarg.	Unresolved		TRO
Crataegus trisperma Ashe	Unresolved		TRO
Crataegus tristis Beadle	Unresolved		TRO
Crataegus triumphalis Sarg.	Unresolved		TRO
Crataegus truncata Sarg.	Synonym		TRO
Crataegus turcomanica Pojark.	Unresolved		TRO
Crataegus turkestanica Pojark.	Unresolved		TRO
Crataegus turnerorum Enquist	Unresolved		TRO
Crataegus twiningii Sarg.	Unresolved		TRO
Crataegus uber Ashe	Unresolved		TRO
Crataegus ucrainica Pojark.	Unresolved		TRO
Crataegus umbratilis Sarg.	Unresolved		TRO
Crataegus umbrosa Sarg.	Unresolved		TRO
Crataegus uncta Sarg.	Unresolved		TRO
Crataegus uniflora Münchh.	Accepted		TRO
Crataegus uniqua Sarg.	Unresolved		TRO
Crataegus ursopedensis J.B. Phipps & O'Kennon	Unresolved		TRO
Crataegus uvaldensis Sarg.	Unresolved		TRO
Crataegus vaga Sarg.	Unresolved		TRO
Crataegus × vailiae Britton	Unresolved		TRO
Crataegus valens Ashe	Unresolved		TRO
Crataegus valida Beadle	Unresolved		TRO
Crataegus vallicola Sarg.	Unresolved		TRO
Crataegus varians Sarg.	Unresolved		TRO
Crataegus vegeta Sarg.	Unresolved		TRO
Crataegus vegrandis Sarg.	Unresolved		TRO
Crataegus velata Ashe	Unresolved		TRO
Crataegus velutina Sarg.	Synonym		TRO
Crataegus venosa Ashe	Unresolved		TRO
Crataegus venulosa Sarg.	Unresolved		TRO
Crataegus venusta Beadle	Unresolved		TRO
Crataegus venustula Sarg.	Unresolved		TRO
Crataegus verecunda Sarg.	Unresolved		TRO
Crataegus verna Ashe	Unresolved		TRO
Crataegus vernans Ashe	Unresolved		TRO
Crataegus verrucalis Peck ex Sarg.	Unresolved		TRO
Crataegus × verruculosa 8757+(pro sp.)+	Unresolved		TRO
Crataegus verruculosa Sarg.	Unresolved		TRO
Crataegus versuta Beadle	Unresolved		TRO
Crataegus vesca Ashe	Unresolved		TRO
Crataegus viaria Beadle	Unresolved		TRO
Crataegus viatica Ashe	Unresolved		TRO
Crataegus viburnifolia Sarg.	Synonym		TRO
Crataegus vicana Beadle	Unresolved		TRO
Crataegus vicina Sarg.	Unresolved		TRO
Crataegus vicinalis Beadle	Unresolved		TRO
Crataegus victorinii Sarg.	Unresolved		TRO
Crataegus × viidumaegica Cinovskis	Accepted		TRO
Crataegus villaris Beadle	Unresolved		TRO
Crataegus villicarpa Sarg.	Unresolved		TRO
Crataegus villiflora Sarg.	Unresolved		TRO
Crataegus villosa Thunb.	Synonym		TRO
Crataegus viminea Ashe	Unresolved		TRO
Crataegus virella Ashe	Synonym		TRO
Crataegus virgata Ashe	Unresolved		TRO
Crataegus viridimontana Sarg.	Synonym		TRO
Crataegus viridis L.	Unresolved		TRO
Crataegus viridis var. atrorubens (2717+(pro sp.)+) E.J. Palmer	Unresolved		TRO
Crataegus viridis var. glabriuscula (Sarg.) J.B. Phipps	Unresolved		TRO
Crataegus viridis var. lanceolata (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus viridis var. lutensis (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus viridis var. nitens (Sarg.) J.B. Phipps	Unresolved		TRO
Crataegus viridis var. nitida Engelm. ex Britton & A. Br.	Synonym		TRO
Crataegus viridis var. ovata (Sarg.) E.J. Palmer	Unresolved		TRO
Crataegus viridis var. velutina (Sarg.) J.B. Phipps	Unresolved		TRO
Crataegus virilis Sarg.	Synonym		TRO
Crataegus visenda Beadle	Unresolved		TRO
Crataegus visendiformis Murrill	Unresolved		TRO
Crataegus vitellina Ashe	Unresolved		TRO
Crataegus vittata Ashe	Unresolved		TRO
Crataegus vivida Sarg.	Unresolved		TRO
Crataegus volgensis Pojark.	Unresolved		TRO
Crataegus vulsa Beadle	Unresolved		TRO
Crataegus warneri Sarg.	Unresolved		TRO
Crataegus watsonii Murrill	Unresolved		TRO
Crataegus wattiana Hemsl. & J.H. Lace	Unresolved		TRO
Crataegus wattiana var. incisa C.K. Schneid.	Synonym		TRO
Crataegus × websteri Sarg.	Unresolved		TRO
Crataegus wheeleri A. Nelson	Unresolved		TRO
Crataegus × whitakeri Sarg.	Unresolved		TRO
Crataegus wilkinsonii Ashe	Unresolved		TRO
Crataegus williamsii Eggl.	Unresolved		TRO
Crataegus wilmorensis Sarg.	Unresolved		TRO
Crataegus wilsonii Sarg.	Accepted		TRO
Crataegus wisconsinensis Kruschke	Unresolved		TRO
Crataegus wootoniana Eggl.	Unresolved		TRO
Crataegus xanthophylla Sarg.	Unresolved		TRO
Crataegus yadkinensis Ashe	Unresolved		TRO
Crataegus youngii Sarg.	Unresolved		TRO
Crataegus zangezura Pojark.	Unresolved		TRO